Karakteristik dan Pengaruh Ion Ca2+ pada Adsorpsi Ion Bikromat oleh Humin

Noormaisyah Saleh

Abstract


Telah dilakukan penelitian tentang interaksi antara humin dan Cr(VI) dalam medium air. Studi yang dilakukan mengenai pengaruh Ca2+ pada adsorpsi Cr(VI). Adsorpsi Cr(VI) dalam humin menurun dengan semakin meningkatnya pH, sesuai dengan kenyataan bahwa Cr(VI) berada dalam bentuk CrO4 2− atau Cr2O7 2−. Kehadiran Ca2+ sebagai kation penjembatan secara signifikan meningkatkan adsorpsi Cr(VI) pada pH tinggi (pH di atas 6). Hasil pengamatan dengan adanya Ca2+ menunjukkan bahwa laju adsorpsi Cr(VI) menurun sesuai dengan kenaikan pH. Hal ini menunjukkan bahwa OH- berperan penting dalam adsorpsi Cr(VI). Pada kondisi yang sama, kapasitas, tetapan kesetimbangan, dan energi adsorpsi Cr(VI) tidak tergantung pada pH.


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References


Gupta, G.S., G. Prassad, K.K. Panday, and V.N. Singh, 1988, Removal of Chrom Dyes from Aqueous Solution by Fly Ash, J.Water, Air and Soil Pollution, 32: 384-395

Aiken, G.R., D.M. Mc Knight, R.L. Wershow, and P. Mac Carthy (Eds), 1985, Humic Substances in Soil, Sediment, and Water: Geochemistry, Isolation and Characterization, John Wiley & Sons, New York

Kohl, S. and J.A Rice, The Binding of Organic Contaminants To Humin, http://www.ecc.ksu.edu/HSRC/96 proceed/kohl.html,

akses 8 Oktober 2002

Rice, J.A. dan P. MacCarthy, 1988, Comments on the Literature of the Humin Fraction of Humus, Geoderma, 43:65-73

Buckman, H.O. and N.C. Brady, 1974, The Nature and Properties of Soils, Eurasia Publishing House, NewDelhi.

Hayes, M.B. and F.L. Himes, 1986, Nature and Properties of Humus-Mineral Complexes, In : “Interaction of Soil Mineral with Natural Organics and Mikrobes†(P.M.Huang and M.Schnitzer, eds), Soil Science Society, WI:103-158

Stevenson, F.J., 1994, Humus Chemistry, Genesis, Composition, Reactions, 2nd Ed., John Wiley & Sons, Inc, New York

Rice, J.A. dan P. MacCarthy, 1989, Characterization of a Stream Sediment Humin, Advances in Chemistry Series, 219:41-54

Hatcher, P.G., 1985, Geochemistry of Humin, In: Humic Substances In Soil, Sediment, and Water (Aiken), John Wiley & Sons, New York

Schlebaum, W., 1999, Organic Contaminants in Soil Desorption Kinetics and Microbial Degradation, Wageningen, Netherland

Cotton, F.A. dan G. Wilkinson, 1989, Kimia Anorganik Dasar, UI-Press, Jakarta

Kozuh, N., J. Stupar, dan B. Gorenc, 2000, Reduction and Oxidation Processes of Chromium in Soils, Environ. Sci. Technol., 34:112-119

Nadler, A. and J. Letey, 1989, Adsorption Isotherm of Polyanions on Soils Using Tritium Labeled Compounds, Soil. Sci. Soc. Am. J., 53:1375-1378

Malekani, K., J.A. Rice, and Jar-Shyong Lin, 1997, The Effect of Sequential Removal of Organic Matter On The Surface Morphology of Humin, Soil Science, 162:333-342

Petrucci, R., 1987, Kimia Dasar: Prinsip dan Terapan Modern, edisi 4, Penerjemah Suminar, Erlangga, Jakarta

Ajwa, H.A. dan M.A. Tabatabai, 1995, Metal-Induced Sulfate Adsorption By Soils: Effect of pH and Ionic Strength, Soil Science, 159:32-42

Herdiansyah, 2000, Adsorpsi Ion Bikromat Oleh Tanah Gambut, tesis S-2, Universitas Gadjah Mada, Yogyakarta.

Marcano-Martinez, E. and M.B. McBride, 1989, Calcium and Sulfate Retention by Two Oxisols of the Brazilian Cerrado, Soil. Sci. Soc. Am. J., 53:63-69

Alimin, 2000, Fraksinasi Asam Humat dan Pengaruhnya Pada Kelarutan Ion Logam Seng(II), Kadmium (II), Magnesium(II) dan Kalsium(II), tesis S-2, FMIPA, UGM, Yogyakarta




DOI: https://doi.org/10.56064/jps.v14i2.113

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